cc: Don't swap PictureLayerTilingSet on activate.

cc/test/fake_picture_layer_impl.cc

Index: cc/test/fake_picture_layer_impl.cc
diff --git a/cc/test/fake_picture_layer_impl.cc b/cc/test/fake_picture_layer_impl.cc
index 13b20ad2e3398ea5ebb3006d9d1eb638eda156fe..e546408ac2ba29e1b21e5a7c7f61e71150bdd0a9 100644
--- a/cc/test/fake_picture_layer_impl.cc
+++ b/cc/test/fake_picture_layer_impl.cc
@@ -13,22 +13,24 @@ namespace cc {
 FakePictureLayerImpl::FakePictureLayerImpl(
     LayerTreeImpl* tree_impl,
     int id,
-    scoped_refptr<RasterSource> raster_source)
+    scoped_refptr<RasterSource> raster_source,
+    bool is_mask)
     : PictureLayerImpl(tree_impl, id),
       append_quads_count_(0),
       did_become_active_call_count_(0),
       has_valid_tile_priorities_(false),
       use_set_valid_tile_priorities_flag_(false),
       release_resources_count_(0) {
-  raster_source_ = raster_source;
-  SetBounds(raster_source_->GetSize());
-  SetContentBounds(raster_source_->GetSize());
+  SetBounds(raster_source->GetSize());
+  SetContentBounds(raster_source->GetSize());
+  SetRasterSourceOnPending(raster_source, Region(), is_mask);
 }
 
 FakePictureLayerImpl::FakePictureLayerImpl(
     LayerTreeImpl* tree_impl,
     int id,
     scoped_refptr<RasterSource> raster_source,
+    bool is_mask,
     const gfx::Size& layer_bounds)
     : PictureLayerImpl(tree_impl, id),
       append_quads_count_(0),
@@ -36,9 +38,9 @@ FakePictureLayerImpl::FakePictureLayerImpl(
       has_valid_tile_priorities_(false),
       use_set_valid_tile_priorities_flag_(false),
       release_resources_count_(0) {
-  raster_source_ = raster_source;
   SetBounds(layer_bounds);
   SetContentBounds(layer_bounds);
+  SetRasterSourceOnPending(raster_source, Region(), is_mask);
 }
 
 FakePictureLayerImpl::FakePictureLayerImpl(LayerTreeImpl* tree_impl, int id)
@@ -55,6 +57,13 @@ scoped_ptr<LayerImpl> FakePictureLayerImpl::CreateLayerImpl(
   return make_scoped_ptr(new FakePictureLayerImpl(tree_impl, id()));
 }
 
+void FakePictureLayerImpl::PushPropertiesTo(LayerImpl* layer_impl) {
+  FakePictureLayerImpl* picture_layer_impl =
+      static_cast<FakePictureLayerImpl*>(layer_impl);
+  picture_layer_impl->fixed_tile_size_ = fixed_tile_size_;
+  PictureLayerImpl::PushPropertiesTo(layer_impl);
+}
+
 void FakePictureLayerImpl::AppendQuads(
     RenderPass* render_pass,
     const Occlusion& occlusion_in_content_space,
@@ -99,15 +108,14 @@ PictureLayerTiling* FakePictureLayerImpl::LowResTiling() const {
   return result;
 }
 
-void FakePictureLayerImpl::SetRasterSource(
-    scoped_refptr<RasterSource> raster_source) {
-  raster_source_.swap(raster_source);
-  if (tilings()) {
-    for (size_t i = 0; i < num_tilings(); ++i) {
-      tilings()->tiling_at(i)->UpdateTilesToCurrentRasterSource(
-          raster_source_.get(), Region(), raster_source_->GetSize());
-    }
-  }
+void FakePictureLayerImpl::SetRasterSourceOnPending(
+    scoped_refptr<RasterSource> raster_source,
+    const Region& invalidation,
+    bool is_mask) {
+  DCHECK(layer_tree_impl()->IsPendingTree());
+  Region invalidation_temp = invalidation;
+  const PictureLayerTilingSet* pending_set = nullptr;
+  UpdateRasterSource(raster_source, &invalidation_temp, is_mask, pending_set);
 }
 
 void FakePictureLayerImpl::SetAllTilesVisible() {